Machine tool



March 14, 1933. W. D. ARCHEA 14,901,489 y MACHINE TOOL Filed Dec. 6,1929 l 8 Sheets-Sheet l' f77/ j l y Syvum/fot WALTER D. ARCHE/s @3M MM,

March 14, l933.

W. D. ARCHEA MACHINE TOOL Filed Dec. e, 1929 vashets-sheet 2 :J1/Wenko@Nfl/ TER D. AncHE/a WM/wwf u.. mw

March 14, 1933.

W. V D. ARCI-IEA 1,901,489

MACHINE TOOL l Filed Dec. 6, 1929 8 sheetsshet 5 In/vento@ WALTER D.ARCH'EA @www AMarch 14, i933.

'w D. ARCHEA MACHINE TOOL Filed Dec. 6, 1929 8 Sheets-Sheet 4gru/venian',

W41. TEP D. AROHEA lMarch V14, 1933. w. D. ARCHEA 1,901,439

MACHINE TOOL Filed Dec. 6, 1929 8 Sheets-Sheet 5 gwmwstoz WALTER D.ARCHE/a Marchm, 1933. w;-D, ARCHEA 1,901,489

MACHINE TOOL Filed Dec. 6,. 1929 sheets-sheet 6 W4 LTER D. APGHEA March14, 1933. wQD. ARCHEA 1,901,489

` `MACHINE TooL Filed Dec. e, 1929 -8 sheets-sheet 7 0\ N WALTER D /lRcHEA March 14, 1933. w, D.`ARCHEA 1,901,489

MACHINE TooL I Filed Dec. 6, 1929 8 Sheets-Sheet 8 WALTER D. /QWGHEA we,MM

Patented hier. 14, i933 FMT;

'WALTER OF *UINCINNTL 01H10, ASSIGNOR 10 TV CINCINNATI MILLING MCSHINECOMPANY, F CINCINNATI, 0HIO, A CORORATION 0F OHIO MACHINE T0013Application med. December 6, 1.929.` Serial No. 412,243.

This invention relates to improvements in milling machines andespecially to milling machines having a predetermined cycle ofoperation.

An object of this invention is to provide improved mechanisms forcontrolling the cyclic operations of an automatic milling machine.

Another object of thisinvention isto provide in a machine ci this t pe,improved.

mechanism for simultaneous y performing a plurality of operations on awork piece.

Another object ci this invention is to provide a milling machine forsimultaneous operation on a plurality of an ularly related portions of awork piece an for finishing a plurality of surfaces on each portion ofsaid work ieee.

Another object of the invention is to provide in a machine tool,improved mechanisms for controlling the actuation of the parts thereofvto simultaneously perform a series of angularly related operations on aplurality of portions of a single work piece.

Another object of this invention is to provide a machine tool foroperation on an irregularly shaped work piece having a plurality ofangularly related surfaces to be operated upon, embodying improvedmechanisms for properly positioning said work piece to present sa1dsurfaces to the cutting tools carried by the machine.

A further and specific object of this invention is to provide anautomatic milling machine for completely finishing the plu.- rality ofcounterweight seats on an internal combustion engine crankshaft at onesetting thereof.

Further objects and advanta es of. the present invention should be reaily understood hy referring to the following speciiications, consideredin conjunction withthe drawings forming a part thereof, and it is to beunderstood that any modifications may he made in the exact structurehereinafter described2 within the scope of the appended claims, withoutdeparting from or exceeding the spirit of the invention.

Figure 1 is a perspective view of a machine embodying this invention;

Figure 20is a sectional view through the rear of the machine, showingthe drive;

Figure y3 is a fragmentary sectional View taken on line 3 3 of Figure 2;

Figure 4 is a fragmentary sectional view taken on line 4-4 of Figure 2;

Figure 5 is a development of the drive taken on line 5 5 ofFigure 2;

Figure 6 is a fragmentary sectional view taken on line 6-6 of Figure 1;

Figure 7 vis a sectional viewl taken on line 7-7 of Figure 6;

Figure 8 is asectional view through the rear carriage and spindle asonline 8-8 of Figure l;

Figure 9 is a semi-diagrammatic View of the mechanism for operating thefront and rear slides supporting the cutter spindles.

Figure 10 is a transverse section of the machine illustrating thesupporting table for the work piece.

Figure l1 is a sectional view taken on line 11-11 of Figure 10;

Figure 12 is a top plan view of themechanism disclosed in Figure 10;

Figure 18 is a sectional View through the control mechanism fortransversely shifting the worh support. f

Figure 14 is a plan view of one end of the work supporting table, partsof which are shown in cross section. s

Figure 15 is a sectional` view taken on 4line 15-15 of Figure 14; and

'f Figure 16 is a sectional view illustrating the control mechanism foryclamping the work pieces on the work support.

Throughout the several views of the drawings, similar referencecharacters are employed to denote the same or similar parts. t l

In the drawings, the numeral 25 designates the hed having risingtherefrom ways 26 and 'ways 27 spaced from one another and respectivelypositioned adjacent the front and rear ends ofv the machine. Extendingtransversely of the -hed and inten mediate ways 26 and 27 is a third setof Ways 28 for the Work support or table 29. A front spindle carrier 30'is mounted on the ways 26 and adapted for movement toward and from thetable 29. A similar spindle carrier 31 is mounted on ways 27, likewisemovable toward and from the work support `or table 29.

Referring now to Figures 2 and 5,' the mechanism for driving theabovementioned :spindle carriers and table will` be described. Suitablepower, whether from an individual to the shaft 35 is a clutch spool 36for operating clutch fingers 37 to establish a driving connectionbetween driving shaft 33 and ydriven shaft 35. Mounted on the other endof the driven shaft is a pinion 38 enmesh with a pair of gears 39 and40. Gear 39 is utilized for driving the cams which control the movementof the various spindle carriers and work supporting table, while gear 40drives the spindles for operation upon the work piece.

The train or transmission line tothe cams include the gear 41 mountedupon a short shaft 42, upon the opposite end of which is the gear 39,which is loosely mounted lon said shaft while gear 41 is keyed thereto.The shaft. 42`is connected with gear 39 by the s hiftable clutch 43whose teeth 44 are adapted to engage teeth 45 on said gear v39.

Gear 41 is meshed with a gear 46 fast on worm shaft 47 which yhasintegral therewith or secured thereto the worm 48 in driving connectionwith a worm wheel 49. This worm wheel 49 is keyed to'shaft 50, whichhas, in addition, keyed thereon intermediate its ends, a pinion 51enmesh with gear teeth 52 formed on disc vcam 53. A

second pinion 54l is carried by the end of shaft and engages teeth 55 ona second disc cam 56. Disc cam- 53 has secured to its rear face a disecam 57 and moves with cam 53 being driven by the said pinion 51. Disccam 53 is employed \for operating the clamping mechanism or clamping thework ,piece to the work support or table while cam 57 is utilized foractuating spindle cariers 30 and 31 toward and from the work piecesupport or table, anddisc'cam56 conl on shaft 61 which telescopes withina sleeve 62 having formed on one-end thereof a bevelI pinion 63 enmeshwith a second bevel in- 5 ion 64. The sleeve 62 is keyed to the's aft 61and is driven b the' rotation of said shaft and has telescoped' into itsother end a shaft 65 which extends to the gears for driving the rearspindles which will be described in detail later. Likewise, bevel pinion64 is v keyed to a vertical shaft 66 which leads to the gears fordriving the rear spindles, which will also be described in detail later.From the foregoing, it will be noted that a single prime mover 1semployed lfor rotating the spindles 4as well as for controlling theactuation of the Various spindle slides and work carr ing table.

' Cams 53 an 57 are secured to a common shaft 67 to move as a unit, andcam 57 is providedl with a cam track 68 in which a roller 69 ispositioned, the roller being supported by a stud 70 carriedby one end ofarm 71. This arm 71 is adapted to be oscillated about pivot 72 and isprovided with a segmental gear 73 which is enmesh with ay secondsegmental gear 74 keyed. or otherwise secured to'stub shaft 75 whichalso has secured to it a lever 76. A link 77 has one end pivoted at 78with the lever 76 and the other end pivoted at 79 with the rear spindlecar' rier 31. .Integral and movable with arm 71 and segment 73 about thepivot 72 is a segmental gear 80 meshing with rack teeth formed in oneend of rack bar 81. This rack bar v81 extends from the rear ofthemachine v to the front thereof and is provided at the forward end withrack teeth 82 enmesh with 'a segment 83 fast on a pivot pin 84. A lever85 i's also secured to the pin 84 and has one leo . end pivotallyconnected at` 86 with a link 87,

which link has its other end pivoted at 8.8 with the carriage 30 oftheforward spindle carrier. L v Y n From the foregoing description it willbe noted that, as cam disc 57 is rotated, the end of the. arm 71 carryinthe roller 69 will be oscillated toward an from the center of shaft 67.mental gears 73 and 80 respectively oscillates segmental gear 7 4 andshift rack bar 81. Oscillationof segmentalgear'74 through the togglejoint, which includesl lever 76 and link 77, moves the rear spindlecarrier toward and from the work supporting table 29. Likewise, axialshifting. of the rack'bar 81 through the segmental gear 83 and itstoggle joints 85 and 87 shifts the. forward `spindle carrier 30.

Prior to the .movement of the spindle carrier, the spindles and cutterscarried thereby are rotated, andthe means for so ,doing will now `be'describedh Telescopic shaft 65 (see Figure 6) has secured to itsforwatd end a bevel .pinion 89 suitably journaled in anti-friction`bearings carried in the lower part. of spindle housing 90,'

which housing is in turn secured lby means .of bolt and nut connections91 to 'the forward spindle lcarrier 30. lBevel pinion 89l f intermediateits ends.

`cal body portion 99 fla meshes with a bevel ear 92 keyed or secured topinion shaft 93 w ich carries a pinion 94 Pinion 94 meshes with a pairof gears 95, which, gears are each carried b or secured to a spindle 96.But one of t e s indles and cutters has been illustrated, w ich isdeemed suiicient since both spindles are duplicates of one another. Thespindle 96 has its lower end suitably journaled in the lower part of thehousing 90 and its up r end in an arm or an overhanging portion 97 ofthespindle housing 90. A cutter 98, havin a central cylindried on each endby a collar 100 and 101 each provided with suitable teeth for millin theseat 102 on the work .iece 103, is carried and rotated by each spindle96.

The work piece here illustrated is a crankshaft for use in internalcombustion engines and the. like on which the seats 102 are milled toreceive a formed counterweight having a complementary seat which issecured to said crank-shaft work piece.

The rear spindles are driven in a similar .manner to lthat justdescribed `for driving the front spindles and this mechanism includesthe vertical shaft 66 which -has secured or keyed to its upper end abevel pinion 104 enmesh with a similar bevel pinion 105 secured to astub shaft 106. Integral with the bevel pinion 105 is a spur pinion 107meshing with a gear 108 fromwhich a sleeve 109 extends. A telescopicshaft 110 is received in the sleeve 109 and driven thereby. Themechanism just described is enclosed in a housing 111 mounted on the bed25 above the housing 112 in which the` transmission gearing and mainstartin clutch are housed. Integral with or secure to the forward end ofshaft 110 is a bevel inion 113 enmesh with a bevel gear 114 eyed orsecured to stub shaft 115 j ourn'aled in suitable anti-friction bearingsmounted in the spindle housing 116 secured torear spindle slide 31 bymeans of suitable bolts and nuts 117. Keyed to shaft 115, so as torotate therewith, is a pinion 118 enmesh with a pair of gears 119 eachcarried by a spindle 120. The spindles being similarin construction,only one of them has been illustrated and will bedescribed.

One end of the spindle 120 is journaled in the housing 116 'while theother end is journaled in an arm 121 extending'v from a bracket 122secured by cap screws or the like 123 to the lower part of the housing116.

From the foregoing it will be understood how the rear spmdles arerotated and also that the same common pinion 38 derives its power fromthe common prime mover to the pulley 32 for rotating both the rearspindles carrying same have a movement relative to and independent ofthe carriers 30 and 31. Since the means for adjusting-the spindlesrelative to the carriers is common to both, it is deeemd suiiicient thatbut one of them be described. Accordingly, and referring to Figure 6, itwill be noted that the upper surface of spindle carrier 30 is lprovidedwith rack teeth 124 engaged by the teeth of worm 125, which has integraltherewith a bevel gear 126 meshing in turn with a bevel pinion 127.Bevel pinion 127 is integral with or secured to a shaft or spindle 128having a knob or other suitable actuating member 129 secured to its uper end. A dial 130 may be used for determlning the amount of rotationof the shaft 128 and consequently the worm 125.

In the operation of the adjusting meshanisln, bolt and nut 91 would beloosened, whereupon power would be applied to the actuating knob 129 forrotating pinion 127, gear 126 and worm 125. Worm 125 would act as ascrew and tend to threadedly advance alon the threads of rack teeth 124and since t e spindle carrier 30'would be held stationary, the entirehousing 90, including the spindles and lcutter 98, would be advancedtoward the work 103 relative to the spindle carrier'30.l

Referring now t0 the mechanism for shiftdesirable that the spindles andhousings ing the work piece support or table including the cam disc 56,which is provided with a cam groove 131 so related to cam' groove 68indisc 57 that after the cutters-have been advanced by thecam groove 68to the limit of their movement toward the work table, arm 132 carryingroller 133 engaged within the groove 131 is oscillated in a clockwisedirection (see Figure 13) about pivot pin 133 carried by housing 112.This arm 13 2 is A provided on its other end witha gear segment 134enmesh with a rack bar 135. As

the cam disc 53 rotates, the rack bar 135 is reciprocated for feedingthe table or work support laterally of the bed. To this end, rack bar13'5 is provided withl a diagonal groove 136 which receives a tongue 137depending from a cylindrical shaped member 138. Member 138 is providedwith a dovetailed tongue 139 received and guided by a vtable or worksupport 29 laterally across the 'W111iy observed,

kbedv 25 and that the relation of the cam pieceto the limit of theirtravel and determining the depth of cut to be made. The cam l53, as wasstated above, is utilized vfor centering and clamping the work piece tothe table or work support after it has 'been placed thereon. Themechanism for so doing includes the said cam 53 having formed therein agroove 145 in which roller 146 carried by one end of' arm 147 rides.Thearm 147 is pivotally mounted to oscillate about pivot 148 and isprovided on its one end with a segmental gear 149 enmesh with a gear 150carried by shaft. 151. Gear 150 meshes with a compound gear 152, whichhas integral therewith pinion 153 `and which is keyed or otherwisesecured to a shaft 154. The shaft 154 extends the'length of the table 29and, has on its other end a-gear similar to the gear 153 and is utilizedfor operating a simllar mechanism. The clamping and centerin mechanismsare mounted on each end of t e table and are actuated from the shaft154. Since these mechanisms are duplicates of one another, it is deemed`160 (see Figure 11) is adapted ,to engage andvupwardly shift 4a plunger'161 against the yleldingv resistance of a spring 162, which has one endin abutment with shoulder 163 formed on lunger 161 and the other endabutting a s oulder 164 formed in. guide sleeve 165. Guide sleeve 165 iscarried b housing 167 secured to the end of the ta le. Plunger 161 abutsat its upper end an adjustin screw 168 which extends through one em?pivoted at 171. lThe otherend172'of the arm is formed to engage one sideof flange 173 formed onwork piece`103 and is adapted v'to lforce theother side of said flange 173 into en agement with an adjustableI stopscrew 1 4 adjustably received in table 29 and locked in'position by thelock nut. A yielding sprin ressed plun er 175 tends torotate or li t t earm 170 a out its pivot kin a. clockwise direction awa lfrom-the oY-sitioning flange 173. -It wil be noted t at ,cam 160 has a concentricportion Vat the'end ofl its throw, sof'that continuedA rotation ofl 0sleeve 157 will havey no effect on the larm 170 after ithas positionedthe work piece to the Y --desired point. During this positioning. ofv

the work piece, cams '158-5159 are rotating but due to their concentricportions, no result is accomplished.

integral cams 158, 159 and 160. The cam 169 ofarln 170, which is At thistime, however, the notch 176 (see Figure 16) formed inthe cam 158 isimmediately beneath the boss 177 formed eccen-v tric on disc 178.Continued rotation of sleeve 157 causes 'shoulder 179 to engage theeccentric boss 177 vto rotate the disc 178.

This disc 178 is keyed or otherwise fastened to a vertical shaft 180having secured to its upper end a similar disc 181 provided withA aneccentric lug 182 received in the pocket 183 formed vin .clamp arm -184.Clamp arm 184 has anelongated perforation 185 therein, through whichguide pin and pivot 186 extends. From the fore oing it will be notedthat when the shoul er 179 engages the eccentric lug 177, the shaft 180.is rotated and the clamp bar axially shifted through the en agement ofthe eccentric lug 182 therewit After the clamp arm has been shiftedtoward the work, the

:sor

desired amount, cam 159'engages the lower end of the shaft 180, raisingsame and actulatingthe clamp arm about the dpivot guide irectionfas pin186 in a counter-clockwise l viewed in Figure 16, to c use said armtoengage. and clamp the wor |piece against the table which supportssame. The axial shifting of the clamp the work piece 1s necessary sothat the work pieces may be expeditiously inserted and re movedfrom themachine.

Itis now evident how the workpieces are placed in the ma ine and clampedin proper predetermin d osition relative to thefcutters by mean o a cam.It is also evident how the cutters and supporting means are actuatedtoward one another and toward the work piece on the table to per-v forma given operation or series of operations upon the work piece. It hasalso been described how thethird cam causes the table arm 184 toward andfrom 'f to be laterally actuated relative to the cuty ters forperforming a second operation or series of operations or for com letingthe operation previously `performed y the cutter.

Inpractice, a prime mover' not shown is constantly rotating the pulleyor gear 32 land shaft connected therewith. The clutchspool 36,for-engaging the main driving "clutch, is provided with a yoke 187 forshifting same, which oke is ada ted to be actuated through sha t 188(see igure 1),

froml which a shifter link 189 extends.`

The shifter is provided 'with a notch 190, to

receive the tongue 191 formed on the end of 198 received in socket 199formed in' -vertical shifter shaft 200. The other'end of shaft200 isprovided with a socket'201 starting lever 192 which pivots aboutfpivot193. 'Mounted on" the other end of shaft similar to socket 199, forreceivin a lug 202 on arm 203 secured to oscillatab e shaft 204. Shaft204 has mounted thereon the shifter yoke 209 for shifting clutch spool43 which controls the rotation of -worm wheel shaft 50 and cams rotatedthereby. Shifter member 196 is provided with a projection 205, receivedin slot 206 in connecting member 207 fast on an oscillating or rockingshaft 208, which rock shaft has secured to it shifter yoke 187 forshifting the main clutch spool 36. From the foregoing it will be notedthat ,the Starting lever 192 is employed for engaging the main frictiondisc clutch,-aswell as the clutch controllmg the transmission gearingextending to and driving the main control cams.

The device is so constructed that after the completion of a work piece,the machine stops. In other words, a single cycle is per-v formed, atwhich time all partsvare stopped and the different members brought totheir original or starting positions. The means for accomplishin this isshown in Figure 2 and includes a plvoted dog 210 arranged to beoscillated within a socket 211 formed the periphery of the disc cam 57.A sultable sprmg loaded plunger 212 serves to hold the dog in its normalposition. As-the cam rotates, the dog 210 is adapted to en gage thetapered end of shifter shaft 197, which is positioned in the path ofsaid dog 210 in order to shift same to the right for disengaging theclutch spool 36 and clutch member 42 for cutting oif all power to themachine and stopping same, other thanthe main driving gear or ulley 32.

The operation of t e machine is as fol-,

' lows:

' tools.

A work piece is placed on the work supporting table in substantiall therelation in which it is to be presente to the cutting The starting lever192 is then manually actuated about its pivot for rockipg the shaft 188which carries the bell cra 194. This axially shifts the rod 197 to theleft, as seen in Figure 2, moving the end thereof toward the cam 57 andinto` the path of the dog 210.- At the same time, the shifter forks 187and 209 shift the clutch spools into engagement with the main startingclutch 34. Through the train of gears extending from the main driveshaft, the cam shaft 50 is rotated, setting in motion the varlouscontrol cams. The relation of the cam tracks to one another is such thatthe centering and clamping mechanism is first set into operation,causing the work piece to be accurately positioned relative, to thecutting tools and clamping same in said po-v sition.I At this time, thecutting tool slides are actuated toward one another and toward the worksupporting table, for feeding the tools into the work piece. After thetools have been advanced to the limit oftheir'v movement, thecontrolling cam for the work supporting table causes said table to move`transversely of the tools and slides supportino same for completing thecut longitudina1y of the workpiece. n will be under.

stood that the tools are lrotated prior to thev en agement thereof withthe work piece. A ter the table has moved to the limit of its movement,the cam will retract it to its in r '75 itial position, while theremaining cams also retract the rotating tool slides and unclamp lthework piece on the table. At this time, the 'various cams have made onecomplete revolution and the dog 211 is about to engage and shift theshifter rod 197. As soon `Attention is invited to rthe fact that the camgrooves have such a contour as to cause rapid movement of the cutters toa cutting position and then at a feed rate to leffect the de Ith of cut.The table is then fed lon i-. tuginally to effect the length of cut. e

table actuating cam is contoured .to effect a rapid return of the tableto a starting position at the finish of the cut and the actuating camforthe spindle carriers is also contoured to effect a rapid withdrawalof the cutters to a starting position at that time.

What is claimed is:

of a beda plurality of slides carried by the bed movable toward and fromlone another, rotating cutter tools carried by the slides, a

1. In a milling machine the combination work-table carried by the bedintermediate theslides and movable 'transversely ofthe slides, a commonmeans for effecting rotation of the tools and movement of the slides'and work table in timed sequential cyclic order to effect a millingoperation, and means automatically effective at the completion of saidoperation to return the movable parts to a starting position.

2. In a milling machine having a given cycle o f operation thecombination of a bed,

a pluralitykof slides carried by the bed mov? able toward and from oneanother, rotating cutter tools carried by the slides, a work tablecarried'by the bed intermediate' the slides for movement transverselythereof, .means lfor effecting rotation of the spindles andi movement ofthe slides and the work table in timed sequential cyclic order to effecta milling operation, means automatically efsition, and means forstopping rotation of `the tools and movement ofthe slides and --cycle ofoperation the combination of a bed,

a plurality of slides carried by the bed movable toward and from oneanother, rotating cutterA tools carried by the slides, a work tablecarried by the bed intermediate the slides'movable transversely of f theslides, means for eecting the rotationof the tools and movements of theslides and work table in timed sequential order, means for stoppin therotation of the tools and movements of t e slides and table at thecompletion of each cycle, and additional means includin amanuallyfoperated starting lever :for inltiati'nlg a repetition of thecyclea 4. n a milling-machine the combination 2o' of a bed, aworksupporting table thereon,

a slide carried by the table for supporting a rotating tool and movabletoward and from the table, and means for effecting the reciprocation ofsaid slide including "a rotating disc cam, an oscillating armyoperatively connected with the cam anda toggle 'having one end pivotallyvsecured to they slide and the other end operatively connected to theoscillatable arm. i

5. In a milling'l machine the combination of a bed, a work supportingtable-thereon, a

pair of slides carried by the bed one on each y side of the table andeach reciprocable toward and from the table, and means for reciprocatingthe slides, said means including a rotating cam, an oscillatable armoperatively connected 1 with the cam; a segmental gear on said, arm, areciprocating rack bar connected with thel segmental gear, a secondoscillatablearm havinga segmental gear operatively connected with therack bar, and a pair of toggles each toggle having one end connected toone slide and the other end operatively connected to 'one of theoscillatable arms.

6. In a milling machine the combination .of abcd, a pair of slidescarried by the bed movable in a direction toward and from one another,means including a unidirectional rotatable cam'for positively actuatingthe slides in both directions. a work supporting table intermediate theslides movable transversely of the slides, and means including a secondunidirectional rotating cam for positively actuating-the. table in bothdirections.

table, rotating cutter tools carried by each slide, rotating cams foreffecting reciprocation of the slides and table, a common drive shaft, a-pair of arallel transmission lines extending from t e drive shaft, oneline for 'of a'bed, a

" slidable pivoted c amp arm operatively conrotating the cutter toolsand the other line lfor rotating-the cams.

8. In a milling machine the combinationadapted to reciprocated towardand from one another, rotating cutter tools carried by the slides, awork` supporting table intermesubstantial relation to the cutter tools,means for adjustin and centering the Work piece relative t'o t e cuttertools, andmeans for pi of slides` carried thereby and diate the slidesandl movable transversely ofl Athe slides for supporting a work piece inclam ing the work piece in its final position. y

9. n a milling machine the combination of a bed, a Work supporting tablecarried by the bed for reciprocation transversely thereof, and means forfinally positioning and clamping the Work piece on the table, said meansincluding a reciprocating rack bar, an oscillatable shaft operativelyconnected' with the rack bar, aplurality of cams carried by the shaft, aivoted centering arm operably connected with one of the cams for finallypositionin nected with another of the cams for clamping the work piecein its final position.

10. In a machine tool organization the combination of a bed, a tablecarried by the bed and movable transversely thereof, a slide onweitherside of the table and reciprocable toward and from the table, means onthe table for centering and clamping` a work piece thereto, a cam foreecting movement of the table, a second cam for elfectingmovevment ofthe slides, a third cam for actuating the centering andclampingmechanisins, and al common actuator for eiecting the rotationofthe cams in unison.

11. In a vmachine tool organization the combination of a bed, a ltablecarried by the bed and movable transversely thereof, means supportingrotating tools carried by the bed and movable toward and from the table,and means eifecting movement of the table includin arotating cam, apivoted arm adapte'oscillated about its pivot by the ed to cam, asegmental gear carried by the arm, a slide reciprocable by the segmentalgear having an angularly formed` way therein,V and a tongue dependingfrom the table interfitting with the way in the slide whereby movementof the slide in one direction causes movement of the 'table in anangularly related direction. i

12. In a machine tool organization the combination of a bed, membersreciprocably carried lby the bed for movement in angularly relateddirections, rotating cutter tools carried Aby certain Iof the members, acommon actuator, transmission gearing extending from the common actuatorto the reciprocable members and rotating cutter tools, and meansincluding a clutch for connecting and disconnectingthe common actuatorthe work piece, and a 4 from the transmission gearin and amanuallybperable lever for shifting the clutch to operatively connectthe common actuator with the transmission gearing.

13. In a machine tool organization the combination of a bed, membersreciprocably carried by the bed for movement in angularlly relateddirections, rotating cutter tools carried by certain of the members, acommon actuator, transmission gearing extending' from the commonactuator to the reciprocable members and [rotating cutter tools, meansincluding a shiftable clutch for connecting the common actuator with thetransmission gearing, a cam for effecting reciprocation of the membersoperated by the transmission gearing, a shifter-for the clutch, manualmeans for operating the shifter to connect the common actuator with thetransmission gearing, and means carried by the cam operatively connectedwith the clutch shifter for disconnecting they clutch at the completionof a single revolution of thecam.

14. In a machine tool organization the combination of a bed, membersreciprocably carried by the bed for movement in angularly relateddirections, rotating cutter tools carried by certain of the members, acommon actuator, transmission gearing extending from theprime Imover tothe reciprocable members and rotating cutter tools, means including aclutch for connecting and disconnecting the common actuator from theltransmission gearing and a manually operable lever `for shifting theclutch to operatively connect the common actuator with the transmissiongearing, and automatic means shifting the clutch for disconnecting thecommon actuator from the transmission gearing. l,

15. In a machine tool organization the combination of a support, a worksupport. ing table carried thereby and movable transversely thereof,means supporting rotating tools movable toward and from the worksupporting table, means automatically centering and clamping a workpiece on the table, and means including a plurality of cams foreffecting the reciprocation of the' table and tool supporting meansso'l'elated that the members are rapidly brought into operative positionslowly .fed to properly finish a work piece and rapidly retracted tonormal inoperative position.

16. In a machine for millin on opposite sides thereo means to support,and position a' crankshaft on the tabl'e` in the spindles on the otherside,l means to feed 1 the cutter spindles normal to the axis of thework to determine' the depth of said i crankshaft counterweight seatsthe comblnation of a/ Y work table and a,pluralit of cutter spindlesseats, automatic means effective after the determlnationvof said depthto eifectrelative movement between the work and spindles to effectlengthwise milling ofthe seats,'and additional means to return. theparts to starting position.

17. In a milling. machine the combina'- tion of a bed, a palr of slidescarried thereby and adapted to be reciprocated toward and from oneanother, rotating cutter tools carried by the slides, a work supportingtable intermediate the slides and movable transversely thereof forsupporting a work piece vcarried thereby to the action ofthe cuttertools, power actuated mechanism for reciprocating the slides and'worktable in redetermined order, and means for ad- ]usting and centering awork piece on the .table relative to the cutter tools, said means beingcoupled to said mechanism for automatic operation thereby prior toreciprocatiOn ofthe slides.

18. In a machine for millin crankshaft counterweight seats thecomblnation of l a work table and a plurality oflcutter spindles onopposite sides th reof, a work holder on the table adapted o receive andsupport a crankshaft, means for nally positioning land clamping thecrankshaft to the table so that each counterweight seat thereof will beadjacentl an individual cutter,

means to feed the cutters normal to the axis of the Work to` determinethe depth of said seats, meansto traverse the cuttersrelative to saidseats to finish the same, means to return the parts to startingposition, and power operated mechanism for actuating all of said meanssequentially in the order recited. v

19. In a machine forimillinl crankshaft counterweight seats thecomblnation of a Work table and a lurality of cutter s indles onopposite si es thereof, a work ho der on the ta a crankshaft, means forfinally positioning and clamping the crankshaft to the table so thateach counterweight seat thereof will be adjacent an individual cutter,means to le adapted to receive and support feed the cutters normal'tothe axis of the Work to determine the depth of said seats, means totraverse the cutters relative to' said seats to finish the same, meansto return the parts tostarting position, and one revolution mechanismfor actuating all of said ymeans sequentially in the order recitedduring one revolution of the mechanism.

20. In a vmachine for milling crankshaft counterweight seats 'thecombination of a work 'table and a plurality of cutter spindles onopposite sides thereof, a work holder on the ta e adapted to receive andsupport a crankshaft, means for finally positioning and clamping thecrankshaft tothe table so 'that each counterweight seat thereof will :beadjacent' an individual cutter, means to feed the cutters normal to theaxisof the work to determine the ,depth of said seats means to traversethe cutters relative to said seats to finish the same,y means to returnthe parts to starting position2 a source of power, one revolutionmechanlsm for actuating a11` of said means sequentially in the'A orderrecited during one revolution of the mechanism, manual means forcouplingy the mechanism to said source of power, and automatic means fordisconnectlng said mecha nism after one .revolution thereof.

In testimony whereof I ax my signature.

WALTER DQ ARCHEA.`

